Tape dispenser for plasterboard junctions

ABSTRACT

A MANUALLY OPERATED DEVICE FOR APPLYING PRESSURE SENSITIVE ADHESIVE RETICULAR TAPE FROM A ROLL RETAINED THEREON TO THE JUNCTIONS OF PLASTERBOARD, COMMONLY CALLED WALLBOARD OR HARD LATH, OVER WHICH A COATING OF PLASTER OR OTHER COATING IS APPLIED. THE DEVICE IS ADAPTED FOR RAPID SMOOTH APPLICATION OF THE TAPE OVER THE JUNCTIONS OF LATH ON THE WALLS, CEILINGS AND CORNERS OF A ROOM BY MANUAL MANIPULATION OF THE DEVICE.

TAPE DISPENSER FOR PLASTERBOARD JUNCTIONS Filed Jun e, 1969 E. PADGETTAprifl 20, 1971 3 Sheets-Sheet 1 April 2% W71 E. PADGETT TAPE DISPENSERFOR PLASTERBOARD JUNCTIONS Filed June 6, 1969 7 v 3 Sheets-Sheet 2ifiaitillilliii\iIEEMEMWA.. 4 7

MM ON INVENTOR. EDWIN PADGETT IIIII 4 April 20, 1971 EPADGETT 3,575,771

TAPE DISPENSER FOR PLASTERBOARD JUNCTIONS Filed June 6, 1969 3Sheets-Shea INVENTOR. EDWIN PADGETT United States Patent 3,575,771 TAPEDISPENSER FOR PLASTERBOARD JUNCTIONS Edwin Padgett, 630 SW. 7th Ave.,Hallandale, Fla. 33009 Filed June 6, 1969, Ser. No. 830,986 Int. Cl.E3211 31/18; B44c 7/02 U.S. Cl. 156-523 Claims ABSTRACT OF THEDISCLOSURE This invention relates in general to tape dispensers and moreparticularly to a manually operated device for rapidly and preciselyapplying pressure sensitive adhesive tape over all junctions ofplasterboard or wallboard on walls and ceilings of a room.

Prior tape dispensers for covering the junctions of Wallboard prior toplastering were generally ineffective, particularly since they includedno means for precisely and smoothly applying and severing the tape nearor at the end of the junction covered. Furthermore, the prior deviceswere not provided with means for effectively covering the lath junctionsin the corner junctions of walls and ceilings of rooms.

The present invention overcomes the above objections and disadvantagesby the provision of a dispenser for a roll of pressure sensitive tape ofeither planar or reticular type, including a convenient handle foroperating same including a blade operated by an auxiliary handle forsevering the tape at the ceiling or other junction ends, whichconstruction is a principal object of the invention.

Another object of the invention is the provision of roller means forapplying pressure sensitive tape from the supply roll of tape andincluding an additional roller means of small diameter for rolling thetape in contact over planar junctions and in close proximity to corners.

Another object of the invention is the provision of a tape dispenser forcovering the junctions of wallboard by manually moving the device overthe junction with the dispenser including a shear blade for manually andprecisely severing the tape in register with the end of the junction ata corner, such as a ceiling.

A further object of the invention is the provision of a right angledattachment for replacing the pressure roller in the aforesaid tapedispenser for precisely and smoothly applying the tape along bothmarginal sides of a corner junction of a room and the junction betweenthe ceiling and wall of a room.

Another object of the invention is the provision of blade-likereplacement for the pressure roller to smooth cut-off ends of the tapeinto adhesive register on the junction of the plasterboards.

These and other objects and advantages in one embodiment of theinvention are described and shown in the following specification anddrawings, in which:

FIG. 1 is a side elevation of the device in reduced scale.

FIG. 2 is a bottom plan view of the device shown in FIG. 1.

FIG. 3 is a top plan view of the device shown in FIG. 1.

FIG. 4 is the same as FIG. 1 in tape applying position.

FIG. 5 is a front elevation of the device shown in FIG. 4 with tapewithdrawn.

FIG. 6 is an enlarged left hand perspective view of the device shown inFIG. 1 in cut-01f position.

FIG. 7 is a fragmentary cross sectional side view taken through sectionline 7-7, FIG. 6.

FIG. 8 is a perspective view of a blade attachment for replacing theroller applicator shown in FIG. 6.

FIG. 9 is a perspective view of a replacement attachment for the rollerapplicator shown in FIG. 6 for bonding the tape along corner junctionsof walls and ceiling.

FIG. 10 is a perspective illustration of the device shown in FIG. 1 inuse.

Referring to FIGS. 1, 2, and 3, a handle socket 1 is provided with aslot means 2 for retaining detachable handles of different length. Aframe support member 3 is pivotally secured to the socket 1 by atransverse screw 4, which provides for pivotal adjustment, illustratedby broken lines in FIG. 2.

A pair of frame members 5 are secured in parallel spaced relation onmember 3 by four spacers 6 secured thereto by riveted studs 7. An outersocket member 8 is secured parallel and midwa between said frame membersS by four bushings 9 and a pair of spaced guide roller supports 10,which elements are rigidly retained by riveted studs 11. A pair ofuprights 12 removably support an axle 13 which is coaxial with a taperoll hub 14 journalled on axle 13 positioned between the frame members5, as shown. A standard roll of reticular tape 15, having a pressuresensitive adhesive on one side thereof, is supported by hub 14 forrotation therewith.

The applicator for applying the tape 15 to a planar surface consists ofa detachable connector plug 16 adapted to be frictionally retained inthe outer end of socket member 8. The plug includes a clevis member 17secured in the end thereof, best shown in FIGS. 1 and 2.. A cylindricalroller 18 is journalled for rotation on an axle 19 secured in a fiatclevis member 17, as shown.

The roller 18 is prevented from movement about the axis of plug 16 bythe engagement of a transverse pin 20 engaging a slot 21 across the endof the plug 16, shown in FIG. 4.

Referring to FIG. 4, a lower guide roller 22 is journalled on axle 23with the opposite ends retained in supports 10, as shown. A fixed guideshaft 24 is riveted between supports 10 in parallel predetermined closespaced relation to roller 22.

An upper guide roller 26 is journalled for rotation on a shaft 28 whichis secured parallel with roller 22 on upward extensions of the supports10, as shown in FIGS. 6 and 7. It is now apparent that the tape will beguided from the roll over roller 22 and roller 26 onto and around roller18 with the adhesive side positioned for placement over a junction.

A shaft 27 having a linear row of needles 25 axially extending radiallytherefrom is positioned above and in spaced relation to roller 26 andretained in fixed relation between the upper end portions of supports 10with the needles therein extending obliquely downward, as shown in FIG.7.

Referring to FIGS. 4 and 6, a tape severance blade 30 has a cutting edgein the form of a wide angle V and is removably secured in a holder 31centrally supported by a shaft 32 for vertical reciprocation which istransversely journalled through socket member 8 for reciprocationtherethrough and normally held in the position shown in FIG. 4 by aspring 33 around the shaft. The lower end of the shaft 32 is secured toa clevis assembly 34 which is pivotally connected to one end of thecutter lever 35 by a pin 36. The lever 35 centrally extends through anopening -37 through support member 3 and is pivoted for oscillationtherein on a transverse pin 38. A cutter handle 39 is pivotally securedto the upper end of lever 35 by a pin 40 for providing lateral rotationof the handle 39 with respect to lever 35 about axis aa which coincideswith the axis of lateral movement of handle socket 1. Both handle socket1 and handle 39 are laterally moved together by a guide member 41secured to socket 1 by pin 42, better shown in FIG. 6.

In operation, the roll of tape is secured on axle 13 in the frame, asshown in FIG. 1, and threaded over rollers 22 and 26 and terminatingover roller 18 with the adhesive side outward as shown in FIG. 1. Then,for example in covering a vertical junction, the roller is manuallypositioned over the junction of the wallboards at the base thereof andthe device moved upward, which will smoothly and securely place the tapeover the junction. At a predetermined distance from the upper end of thejunction, the lever 39 is operated which will sever the tape just beyondroller 26 and permit the roller 18 to smoothly apply the tape over theremaining upper portion of the junction.

When a workman encounters a position when the manipulation of the deviceis beyond the manual handling of the handle socket 1 then an extensionhandle 43 is secured in the handle socket 1 for convenience, asillustrated in FIG. 10.

Referring to FIG. 8, a blade type applicator 44, centrally secured toconnector plug 45 in place of plug 16, is used in the socket member 8for moving the cutoff end portion of the tape into adhesive contact withthe end of the lath junction.

Referring to FIG. 9, a blade 46 is formed at ninety degrees with aroller 47 journalled on an axle 48 in a central slot in one end of thejunction of the blade 46, as shown. The roller is provided with asubstantially ninety degree convergent V-shaped rim 49 and a connectorplug 50, secured midway between the blades 46 and extending rearward atan angle from the roller 47, to manually move the tape into smoothcontact with the corner junction in a room.

This invention comprehends certain modifications in construction thatcome within the teachings and spirit of the above specification.

Having described my invention, I claim:

1. A dispenser for applying pressure sensitive adhesive tape overmarginal edge junctions of coplanar plasterboards comprising a meansforming an elongated frame with an operating handle at one end thereofand a tape applicator at the opposite end thereof,

a roll of pressure sensitive adhesive tape of predetermined widthremovably journalled for rotation in said frame about an axis transverseand central of the width of said frame and positioned between saidhandle and said applicator,

said first applicator including a detachable coupling means forengagement to the said opposite end of said frame and having atransverse cylindrical tam application roller journalled for rotation atthe outer end of said applicator parallel said axis and transverselyaligned with said roll of tape,

an upper intermediate guide roller journalled for rotation in said framepositioned in transverse alignment above and between said axis and saidapplication roller for guiding said tape withdrawn from said roller in apredetermined path over said application roller,

a tape impailing member secured in said frame positioned above and inparallel transverse aligned spaced relation with respect to saidintermediate roller having a plurality of transversely spaced pointedimpailing members extending downward parallel said guide roller andspaced a predetermined distance therefrom,

a tape cutting blade means journalled for reciprocation in said framesubstantially normal thereto adjacent said guide roller between thelatter and said tape applicator for movement from an idle position belowsaid path of said tape to a predetermined shear position above saidpath,

lever means pivotally secured in said frame connected to said blademeans for manually moving the latter from said idle to said shearposition and for moving said tape upward in said path for temporaryimpailment on said impailing members and severing same between saidguide roller and said application roller when operated at the completionof the covering of one of said junctions by the manual operation of saiddispenser.

2. The construction recited in claim 1 wherein said blade means includesa blade member removably secured in the upper end of the movable elementand having a wide angle V-shaped cutting edge on the upper edge thereoffor laterally severing said tape impailed on said impailing membersabove said tape path from its opposite outside edges toward the centerthereof.

3. The construction recited in claim 1 including a second applicatorcomprising a straight smoothing outer edge of predetermined width andthickness with a coupling means central of one side portion thereof forinterchange with said first applicator with the said outer edgepositioned parallel said axis for applying and smoothing the cut off endportion of said tape over the end portions of said junctions.

4. The construction recited in claim 1 including a third applicatorinterchangeable with said first applicator comprising a substantiallyright angle V-shaped member of predetermined length with the oppositeouter planar sides of predetermined width terminating in a linearjunction, a roller having a convergent V-shaped periphery journalled forrotation in a clearance slot centered in said member at one end of saidjunction with the axis of rotation of said roller transverse saidV-shaped member including a said coupling means central of the innersides of said V-shaped member at a predetermined angle with respect tosaid junction and said junction positioned normal and central to saidpath of said tape for applying and smoothing said tape over the cornersof wall and ceiling junctions of Wall and ceiling plasterboards.

5. The construction recited in claim 1 including an auxiliary handlemeans adjustably secured to the end of said first mentioned handle forlateral positioning with respect thereto for using said device inrestricted areas.

References Cited UNITED STATES PATENTS 1,745,802 2/1930 McBurney l565263,116,195 12/1963 Lathrop et a1. 156525 3,148,104 9/1964 Rapp 156575SAMUEL W. ENGLE, Primary Examiner J. M. HANLEY, Assistant Examiner US.Cl. X.R. l56526, 575, 576

